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A silver 3.5 inch hard drive with a circuit board and label

DELL

DELL 400-ALCN 6TB 3.5" SAS 7200 RPM internal hard drive

SKU CH-XNZD-G4DVZ

A 6 TB 3.5-inch SAS drive spinning at 7200 RPM with a 12 Gb/s transfer rate

  • Total capacity6 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • 6 TB capacity stores large data sets
  • 7200 RPM spindle delivers consistent read/write speeds
  • SAS 12Gb/s interface enables fast host communication
  • 5 inch form factor fits standard drive bays
  • Dell part 400-ALCN ensures genuine OEM compatibility

Dell 400-ALCN 6TB SAS Drive

The Dell 400-ALCN is a 6TB 3.5" internal hard drive built for desktop and server bays. It spins at 7200 RPM and connects through a SAS 12Gb/s interface. The drive uses a nearline design suited to continuous operation. It arrives new in original or OEM packaging.

Who This Suits And Who Should Look Elsewhere

This drive suits administrators adding high-capacity storage to systems equipped with a 12Gb/s SAS backplane or controller. It is not for platforms that lack a SAS host bus adapter or cannot accommodate a 3.5" form factor. Buyers needing a different interface or a smaller physical size should consider other options.

Deciding Specification SAS 12Gb/s Interface

The SAS 12Gb/s interface is the single specification that decides compatibility. The drive requires a controller and backplane that support this exact protocol and speed. Without a matching SAS connection the drive will not function. Verify your hardware provides a 12Gb/s SAS port before purchase.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $256.99
Pricier than about 78% of the 4,938 comparable items (median $107.99).
Total capacity 6 TB
Higher than about 75% of the 2,372 comparable items (median 2 TB).
Price per TB $42.83 per TB
Cheaper than about 67% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameDell
Model name400-ALCN
Total capacity6 TB
Performance
Rotational speed7,200 RPM
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

How do I install this 3.5" SAS drive and what step is often missed?

Mount the drive in a 3.5-inch bay, attach the SAS data and power cables, then ensure the backplane or controller is set to 12Gb/s mode; the link-speed negotiation step is frequently skipped.

What maintenance or replacement will this 7200 RPM nearline drive need later?

Plan to replace the drive after its rated service life or if SMART attributes report reallocated sectors; no field-serviceable parts exist inside the sealed helium enclosure.

What limit appears first on this 6TB SAS drive during sustained writes?

The 12Gb/s interface ceiling and the 7.2K rotational speed combine to cap sustained throughput, so the mechanical media transfer rate becomes the bottleneck before the SAS link saturates.

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